广东英德滑水山植物区系研究

Studies on Plant Flora of Huashui Mountain,Yingde City, Guangdong

初步调查结果显示 ,广东英德滑水山野生维管植物种类共有 12 73种 (或变种 ) ,隶属于 199科 6 5 6属 .其中蕨类植物 12 8种 ,所占比例较大 ,表明植物区系起源古老 .植物资源丰富 ,仅药用植物多达 80 0多种 ,初步统计了 11种资源类别 .区系表征科为壳斗科、山茶科、樟科、山矾科、冬青科、桑科、紫金牛科等 ,说明该地域是华夏植物区系的重要组成部分 .种子植物属的分布区类型中泛热带分布占优势 ,同时热带、温带区系成分均有不同程度的侵入 ,区系成分复杂 ,是南亚热带向中亚热带过渡的典型区域 ,充分体现出其原始古老的自然性。

Huashui Mountain of Yingde City, Guangdong Province, is situated at long. 113°40' E. by lat. 24°22'. Recent investigation on vascular plant resources and flora shows that the flora has a total species (including varieties) of 1 273 belonging to 199 families and 656 genera. The fern of 128 species has a high rate in the flora and indicates that the flora is an old one. Plant resources are plentiful in this area. The characterestic families are Fagaceae, Theaceae, Lauraceae, Symplocaceae, Aquifoliaceae, Moraceae, Myrsinaceae, etc. all of which are the basic elements of Cathayasian flora. Phytogeographically, the pan_tropical and Asian tropical genera are common, meanwhile the tropical elements and temperal elements also appear in this area, but most of them include only a few species. It's possible to believe that this area is the north border of the tropical plant and the south border of the temperal plant. The nature of old origin, the special transition from south subtropical to center subtropical, and species diversity of plant are typical in Huashui Mountain flora.